libstdc++: Simplify dejagnu directives for some tests using threads

Replace dg-require-effective-target directives with a target selector on
the dg-do directive.

We can also remove { dg-require-effective-target pthread } and the
associated { dg-options "-pthread" } by allowing it to run on
non-pthread targets and conditionally adding -pthread only for pthread
targets.

libstdc++-v3/ChangeLog:

	* testsuite/20_util/shared_ptr/atomic/3.cc: Simplify dg
	directives.
	* testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc:
	Likewise.
	* testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc:
	Likewise.
	* testsuite/20_util/synchronized_pool_resource/allocate.cc:
	Likewise.
	* testsuite/20_util/synchronized_pool_resource/allocate_single.cc:
	Likewise.
	* testsuite/20_util/synchronized_pool_resource/cons.cc:
	Likewise.
	* testsuite/20_util/synchronized_pool_resource/cons_single.cc:
	Likewise.
	* testsuite/20_util/synchronized_pool_resource/is_equal.cc:
	Likewise.
	* testsuite/20_util/synchronized_pool_resource/multithreaded.cc:
	Likewise.
	* testsuite/20_util/synchronized_pool_resource/options.cc:
	Likewise.
	* testsuite/20_util/synchronized_pool_resource/release.cc:
	Likewise.
	* testsuite/20_util/synchronized_pool_resource/release_single.cc:
	Likewise.
	* testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
	Likewise.
	* testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc:
	Likewise.
	* testsuite/30_threads/stop_token/stop_callback/destroy.cc:
	Likewise.

15 files changed, 24 insertions, 46 deletions

diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/3.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/3.cc
index 8346191..19efcad 100644
--- a/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/3.cc
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/3.cc
@@ -1,6 +1,5 @@
-// { dg-do run }
+// { dg-do run { target c++11 } }
 // { dg-additional-options "-pthread" { target pthread } }
-// { dg-require-effective-target c++11 }
 // { dg-require-gthreads "" }
 
 // Copyright (C) 2014-2023 Free Software Foundation, Inc.
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc
index 20c910c..af0e65e 100644
--- a/libstdc++-v3/testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc
@@ -17,10 +17,9 @@
 
 // 20.6.6.2 Template class shared_ptr [util.smartptr.shared]
 
-// { dg-do run }
+// { dg-do run { target c++11 } }
 // { dg-additional-options "-pthread" { target pthread } }
 // { dg-add-options libatomic }
-// { dg-require-effective-target c++11 }
 // { dg-require-gthreads "" }
 // { dg-require-cstdint "" }
 
diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc
index d6c8611..07f7c49 100644
--- a/libstdc++-v3/testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc
@@ -17,10 +17,9 @@
 
 // 20.6.6.2 Template class shared_ptr [util.smartptr.shared]
 
-// { dg-do run }
+// { dg-do run { target c++11 } }
 // { dg-additional-options "-pthread" { target pthread } }
 // { dg-add-options libatomic }
-// { dg-require-effective-target c++11 }
 // { dg-require-gthreads "" }
 // { dg-require-cstdint "" }
 
diff --git a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/allocate.cc b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/allocate.cc
index f9a4a2f..822a410 100644
--- a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/allocate.cc
+++ b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/allocate.cc
@@ -15,10 +15,8 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-do run }
-// { dg-options "-pthread" }
-// { dg-require-effective-target c++17 }
-// { dg-require-effective-target pthread }
+// { dg-do run { target c++17 } }
+// { dg-additional-options "-pthread" { target pthread } }
 // { dg-require-gthreads "" }
 
 #include <memory_resource>
diff --git a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/allocate_single.cc b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/allocate_single.cc
index a29575f..4acfde6 100644
--- a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/allocate_single.cc
+++ b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/allocate_single.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-do run }
-// { dg-require-effective-target c++17 }
+// { dg-do run { target c++17 } }
 // { dg-require-gthreads "" }
 
 // This runs the same tests as allocate.cc but without -pthread
diff --git a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/cons.cc b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/cons.cc
index f8b74d9..a3f9858 100644
--- a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/cons.cc
+++ b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/cons.cc
@@ -15,10 +15,8 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-do run }
-// { dg-options "-pthread" }
-// { dg-require-effective-target c++17 }
-// { dg-require-effective-target pthread }
+// { dg-do run { target c++17 } }
+// { dg-additional-options "-pthread" { target pthread } }
 // { dg-require-gthreads "" }
 
 #include <memory_resource>
diff --git a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/cons_single.cc b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/cons_single.cc
index ab215ba..9668a51 100644
--- a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/cons_single.cc
+++ b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/cons_single.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-do run }
-// { dg-require-effective-target c++17 }
+// { dg-do run { target c++17 } }
 // { dg-require-gthreads "" }
 
 // This runs the same tests as cons.cc but without -pthread
diff --git a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/is_equal.cc b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/is_equal.cc
index 5be6bd6..aacf00b 100644
--- a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/is_equal.cc
+++ b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/is_equal.cc
@@ -15,10 +15,8 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-do run }
-// { dg-options "-pthread" }
-// { dg-require-effective-target c++17 }
-// { dg-require-effective-target pthread }
+// { dg-do run { target c++17 } }
+// { dg-additional-options "-pthread" { target pthread } }
 // { dg-require-gthreads "" }
 
 #include <memory_resource>
diff --git a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/multithreaded.cc b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/multithreaded.cc
index a7283bf..7992367 100644
--- a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/multithreaded.cc
+++ b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/multithreaded.cc
@@ -15,10 +15,8 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-do run }
-// { dg-options "-pthread" }
-// { dg-require-effective-target c++17 }
-// { dg-require-effective-target pthread }
+// { dg-do run { target c++17 } }
+// { dg-additional-options "-pthread" { target pthread } }
 // { dg-require-gthreads "" }
 
 #include <memory_resource>
diff --git a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/options.cc b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/options.cc
index a869b99..9d98b50 100644
--- a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/options.cc
+++ b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/options.cc
@@ -15,10 +15,8 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-do run }
-// { dg-options "-pthread" }
-// { dg-require-effective-target c++17 }
-// { dg-require-effective-target pthread }
+// { dg-do run { target c++17 } }
+// { dg-additional-options "-pthread" { target pthread } }
 // { dg-require-gthreads "" }
 
 #include <memory_resource>
diff --git a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/release.cc b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/release.cc
index d1c6043..6752d6e 100644
--- a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/release.cc
+++ b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/release.cc
@@ -15,10 +15,8 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-do run }
-// { dg-options "-pthread" }
-// { dg-require-effective-target c++17 }
-// { dg-require-effective-target pthread }
+// { dg-do run { target c++17 } }
+// { dg-additional-options "-pthread" { target pthread } }
 // { dg-require-gthreads "" }
 
 #include <memory_resource>
diff --git a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/release_single.cc b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/release_single.cc
index f69e960..9645bc6 100644
--- a/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/release_single.cc
+++ b/libstdc++-v3/testsuite/20_util/synchronized_pool_resource/release_single.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-do run }
-// { dg-require-effective-target c++17 }
+// { dg-do run { target c++17 } }
 // { dg-require-gthreads "" }
 
 // This runs the same tests as release.cc but without -pthread
diff --git a/libstdc++-v3/testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc b/libstdc++-v3/testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc
index edebaa6..bac1f35 100644
--- a/libstdc++-v3/testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc
+++ b/libstdc++-v3/testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc
@@ -15,11 +15,9 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a -pthread" }
 // { dg-add-options libatomic }
-// { dg-do run }
-// { dg-require-effective-target c++2a }
-// { dg-require-effective-target pthread }
+// { dg-do run { target c++20 } }
+// { dg-additional-options "-pthread" { target pthread } }
 
 #include <condition_variable>
 #include <thread>
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc
index f616287..e780955 100644
--- a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc
@@ -15,10 +15,9 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a -pthread"  }
 // { dg-add-options libatomic }
-// { dg-require-effective-target c++2a }
-// { dg-require-effective-target pthread }
+// { dg-do run { target c++20 } }
+// { dg-additional-options "-pthread" { target pthread } }
 // { dg-require-gthreads "" }
 
 #include <stop_token>
diff --git a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/destroy.cc b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/destroy.cc
index 6bdd4d13..f13761c 100644
--- a/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/destroy.cc
+++ b/libstdc++-v3/testsuite/30_threads/stop_token/stop_callback/destroy.cc
@@ -15,10 +15,9 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a -pthread"  }
 // { dg-add-options libatomic }
-// { dg-require-effective-target c++2a }
-// { dg-require-effective-target pthread }
+// { dg-do run { target c++20 } }
+// { dg-additional-options "-pthread" { target pthread } }
 // { dg-require-gthreads "" }
 
 #include <stop_token>